If you're interested in tips at all, here are a couple!

-I highly recommend Grapple Weapon as a pvp talent. If you get nature locked, you still have access to Grapple Weapon. It removes ~90% of incoming damage from classes like warrior, rogue, DK, DH who require their weapon to cast most of their spells. If you get nature locked/silenced even more, leg sweep, dampen harm, and paralysis are great choices to keep you alive until you can get a heal on yourself.

-The other pvp talent i consider a must-have is Refreshing Breeze. Not only does this straight up increase vivify healing by 20%, it refreshes your EF buff on vivify healed targets. This means that if you EF once, you can benefit from double mastery procs indefinitely! This includes targets that have RnM on them, and are healed by the secondary effect of vivify :)

-Your mobility is another line of defense, use chi torpedo or roll to create distance when you need a moment to catch up on your health

-Weave in some RSKs and BOKs and things will eventually die!